I appreciate that you are trying to develop, but the most important step is to find enough demand, so ask the community if they want to get that bot before starting to deloping it.
I don't think people are doing it for the purposes of being "serious" in the forum but for them to help out other people who are interested in this kinds of things. His idea isn't that bad or is something that will affect Bitcointalk in a bad way so its really not a good thing to discourage what he wants to do especially if no one has applied it yet. Also if someone has developed a notification bot for Discord I don't think someone will be addicted to the forum because of it, I wake up everyday looking at my phone with dozens of notifications from various apps but after skimming all of it I basically hit "clear them all" in my phone.